Union apprenticeship sign-ups near Raleigh - any advice?

A local apprenticeship programme is taking applicants for the next intake. The application needs a diploma or equivalent, a driver's licence and a short aptitude test. How hard is the test?

The aptitude test was mostly maths and reading a diagram. Free practice tests online were enough for me.

Keep everything in writing and save the confirmation numbers. It made the follow-up calls so much easier.